effective date
noun[C]
ukusFINANCE,LAW
thedatewhen anagreementstartstooperate, or when something isrecordedas beingboughtorsold:
Payment ofseverancepaywillcommenceassoonaspracticableafter theeffectivedate.
Theeffectivedateof apurchasemade through aninvestmentdealeris thedatetheorderisreceivedby the Fund in which thesharesare beingpurchased.